Web Mapping with Vector Tiles using Open Source Tools
June 22nd, 2018
Peter Keum - WTD GIS Specialist, GISP
@pkeum
CUGOS
Web Mapping with Vector Tiles using Open Source Tools
Free to run it
Free to modify it
Free to share it
Free to share your modification
Why Now?
Commons-based peer production
Tools
Bandwidth
Interest
Commons-based peer production (CBPP)
Yochai Benkler (2002), Harvard Law Professor
-
Collaborative efforts based on sharing information
-
Large number of people working cooperatively usually over internet
-
People participate because they are passionate about particular thing and revel in creating something new and better
Using internet to build rich valuable collections of knowledge & product
Flexible
Easy
Homogenous systems and single vendor strategies can be convenient BUT comes with trade-off. Lack of flexibility for fast adoption
VS
FOSS4G: Free and Open Source Software for Geospatial
GIS
Companies are using maps not just as nice features but to drive revenue as core components of their offering. Maps are no longer just a good way to visualize content, they are core to competitive advantage.
Companies are thinking more creatively about how to combine location with outside content and internal business data to differentiate products
Raster
- Image format (png, jpg)
- Styled before loading
- Specific zoom levels
Map Tiles
Vector Tiles & Web Mapping
Raster Tiles
- Don't Scale
- Hard to change
- Just Pictures, not data
so 2010... but
ArcMap
ArcGIS Server
Common Enterprise GIS Workflow
Another new new thing???
Vector Tiles
language-neutral, platform-neutral extensible mechanism for encoding structred data"
Similar to xml except smaller, faster and simpler
.pbf or .mvt (mapbox vector tile)
Vector Tiles
- Packet of Binary format geographic data
- Clipped to the boundaries of each tile
- Format for Easy to Store
- Format for Distribution at Scale
Vector Tiles
- Very Compressed data
Vector Tiles can deliver the minimum amount of data your software needs with speed at scale with a low cost
Raster vs Vector Tiles
Smart Data!
Easy To Change!
Power of Vector Tiles
Five County Parcels Polygons - Demo
- King, Pierce, Snohomish, Island, Kitsap
- 1.2 million polygons
- shp 730 MB -> 90 MB vector tiles
Quick Demo 1
WHOA!
Power of Vector Tiles
Quick Demo 2
WHOA!!
Docker Container
Workshop Workflow
(1) Preparing Data
Geospatial Data Abstraction Library
Command line utilies for data processing and data translation
Convert shape file to GeoJson
(2) Creating Vector Tiles
Command-line Utility tool to convert custom data to vector tiles
GeoJSON --> *.mbtiles
(3) Rendering Vector Tiles
Open Source Vector Tile server with options
(4) Styling Vector Tiles
Free and Open Source visual style editor for designer and developers
- Can Run locally
Commercial visual style editor for designer and developers & so much more...
Raster vs Vector Tiles
CUGOS
Cascadia
Users
of
Geospatial
Open
Source
"First do it, then do it right, then do it better."
Doing is Learning, but...
Doing with mistakes?
It's still learning!
SO, Here We GO!
June 2018, NW WA GIS Group Presentation - Summary from WA URISA workshop 2018
By Peter Keum
June 2018, NW WA GIS Group Presentation - Summary from WA URISA workshop 2018
This is modified version of 2018 WA URISA Vector Tiles workshop presentation. Presentation on creating vector tiled basemap using open source tools. using local data to generate vector tiles and create webmap. Using gdal/ogr, tippecanoe and tileserver-gl server to create and serve vector data and web map.
